from __future__ import annotations

import logging
from dataclasses import dataclass
from pathlib import Path
from typing import Any, Callable

from chik_rs import G1Element
from chik_rs.sized_bytes import bytes32

from chik.util.byte_types import hexstr_to_bytes
from chik.util.config import load_config, lock_and_load_config, save_config
from chik.util.streamable import Streamable, streamable

"""
Config example
This is what goes into the user's config file, to communicate between the wallet and the farmer processes.
pool_list:
    launcher_id: ae4ef3b9bfe68949691281a015a9c16630fc8f66d48c19ca548fb80768791afa
    owner_public_key: 84c3fcf9d5581c1ddc702cb0f3b4a06043303b334dd993ab42b2c320ebfa98e5ce558448615b3f69638ba92cf7f43da5
    payout_instructions: c2b08e41d766da4116e388357ed957d04ad754623a915f3fd65188a8746cf3e8
    pool_url: localhost
    p2_singleton_puzzle_hash: 2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824
    target_puzzle_hash: 344587cf06a39db471d2cc027504e8688a0a67cce961253500c956c73603fd58
"""

log = logging.getLogger(__name__)


@streamable
@dataclass(frozen=True)
class PoolWalletConfig(Streamable):
    launcher_id: bytes32
    pool_url: str
    payout_instructions: str
    target_puzzle_hash: bytes32
    p2_singleton_puzzle_hash: bytes32
    owner_public_key: G1Element


def load_pool_config(root_path: Path) -> list[PoolWalletConfig]:
    config = load_config(root_path, "config.yaml")
    ret_list: list[PoolWalletConfig] = []
    pool_list = config["pool"].get("pool_list", [])
    if pool_list is None:
        return ret_list

    for pool_config_dict in pool_list:
        try:
            pool_config = PoolWalletConfig(
                bytes32.from_hexstr(pool_config_dict["launcher_id"]),
                pool_config_dict["pool_url"],
                pool_config_dict["payout_instructions"],
                bytes32.from_hexstr(pool_config_dict["target_puzzle_hash"]),
                bytes32.from_hexstr(pool_config_dict["p2_singleton_puzzle_hash"]),
                G1Element.from_bytes(hexstr_to_bytes(pool_config_dict["owner_public_key"])),
            )
            ret_list.append(pool_config)
        except Exception as e:
            log.error(f"Exception loading config: {pool_config_dict} {e}")

    return ret_list


def update_pool_url(root_path: Path, pool_wallet_config: PoolWalletConfig, pool_url: str) -> None:
    def update_pool_url_for_entry(config_entry: dict[str, Any]) -> bool:
        if config_entry.get("pool_url", "") != pool_url:
            config_entry["pool_url"] = pool_url

            return True

        return False

    update_pool_config_entry(
        root_path=root_path,
        pool_wallet_config=pool_wallet_config,
        update_closure=update_pool_url_for_entry,
        update_log_message=f"Updating pool config for pool_url change: {pool_wallet_config.pool_url} -> {pool_url}",
    )


def update_pool_config_entry(
    root_path: Path,
    pool_wallet_config: PoolWalletConfig,
    update_closure: Callable[[dict[str, Any]], bool],
    update_log_message: str,
) -> None:
    with lock_and_load_config(root_path, "config.yaml") as config:
        pool_list = config["pool"].get("pool_list", [])
        if pool_list is None:
            return
        updated = False
        for pool_config_dict in pool_list:
            launcher_id = pool_wallet_config.launcher_id
            try:
                if hexstr_to_bytes(pool_config_dict["launcher_id"]) == bytes(launcher_id):
                    if update_closure(pool_config_dict):
                        updated = True
            except Exception as e:
                log.error(f"Exception updating pool config {pool_config_dict} for launcher_id {launcher_id}: {e}")
    if updated:
        log.info(update_log_message)
        config["pool"]["pool_list"] = pool_list
        save_config(root_path, "config.yaml", config)


async def update_pool_config(root_path: Path, pool_config_list: list[PoolWalletConfig]) -> None:
    with lock_and_load_config(root_path, "config.yaml") as full_config:
        full_config["pool"]["pool_list"] = [c.to_json_dict() for c in pool_config_list]
        save_config(root_path, "config.yaml", full_config)
